# SDR ASAA2019080330294

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2019
- Submitted: August 6, 2019
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 46,782 hours, 13,933 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning Light
- Condition: False Activation
- Location: Window
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019080330294

## Discrepancy

LEFT SIDE WINDOW HEAT ILLUMINATED DURING FLIGHT, RAN QRH WITH OVERHEAT LIGHT REILLUMINATED AFTER CHECKLIST COMPLETE. GROUNDED - YES. COULD NOT DUPLICATE MALFUNCTION. RAN WINDOW HEAT APPROX 15 MINUTES. NO DEFECTS NOTED. WHCU BITE CK NORMAL SEVERAL TIMES. WINDOW POWER LOGGED PREVIOUS FLIGHT. OP CK NORMAL. REF B737-800 FIM 30-14 TASK 814.

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